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IDS Forum

Re: RE: RE: HDR Question

Posted By: Madison Pruet
Date: Thursday, 23 November 2017, at 10:23 a.m.

In Response To: Re: RE: RE: HDR Question (BENJI LONG)

In order to make a socket (TCP) connection, the program making the connect request must have the IP address of the remote system and the port (i.e. service) number. Both of these must be in number format when the socket call is issued. If using DNS, then the conversion of the name to the numbers can hang or take a longer time to resolve. You can however place the address and port numbers in the sqlhost file. If you are not totally in control of your systems, however, this can cause a problem because the system administrator might change things around without you knowing it.

When I was working, I always used the numbers in my sqlhosts file because I was always running multiple instances on a single server. Since I was using local loopback, I didn't want to have to wait for DNS to resolve the names. More often than not, it would hang because I was always using virtual systems which more often than not would not be configured in DNS.

Madison Pruet
Retired and Loving it

On Thursday, November 23, 2017, 8:02:48 AM CST, BENJI LONG <ruggedmouse@hotmail.com> wrote:

making progress. You guys were right. I put the IP and port into the sqlhosts
files, and dbaccess can now connect both ways.

I'm going to see if I can fire up HDR now, and I sent a note to the unix
admins to try and figure out why that /etc/hosts file isn't working. From what
I understand, Informix will get the information from the sqlhosts file, and
then do the lookup in the /etc/hosts file to get the IP.

Not sure where I got the advice on to put the DBSERVERNAME in the
/etc/services file, but you are right there as well. That is confusing to
those of us that haven't got it 100% figured out yet. I thought they had to be
the same.

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